Laminating process
    3.
    发明授权
    Laminating process 失效
    层压工艺

    公开(公告)号:US3761339A

    公开(公告)日:1973-09-25

    申请号:US3761339D

    申请日:1971-04-07

    CPC classification number: C08J5/24

    Abstract: AN IMPROVED LAMINATING PROCESS PARTICULARLY USEFUL FOR LAMINATING A STRUCTURALLY WEAK MEMBER TO A STRUCTURALLY STRONG MEMBER BY APPLYING TO ONE OR BOTH MEMBERS A SOLUTION OF A RESINOUS REACTION PRODUCT OF DIMETHYLOLPROPIONIC ACID WITH A LOWER ALIPHATIC ALDEHYDE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, PHENOL, ALKYL PHOENOL, AND ALKANOLAMINE AND MIXTURES THEREOF.

    Production of vinyl oxazoline esters
    6.
    发明授权
    Production of vinyl oxazoline esters 失效
    生产乙烯氧杂环丁醇酯

    公开(公告)号:US3839350A

    公开(公告)日:1974-10-01

    申请号:US24431572

    申请日:1972-04-14

    Inventor: HUNSUCKER J

    CPC classification number: C07D263/12 C07D263/14

    Abstract: 1. IN A PROCESS FOR THE PRODUCTION OF A VINYL OXAZOLINE CORRESPONDING TO THE FORMULA

    2-(CH2=C(-R)-),4-R1,4-R2-2-OXAZOLINE

    WHEREIN R IS AN ALKYL OR ALKENYL GROUP OF FROM 1 TO 20 CARBON ATOMS AND R1 AND R2 ARE METHYL, ETHYL OR THE GROUP

    R-CH2-COO-CH2-

    AND CAN BE THE SAME OR DIFFERENT, BY REACTING AN OXAZOLINE CORRESPONDING TO THE FORMULA

    2-(R-CH2-),4-R1,4-R2-2-OXAZOLINE

    WITH AN ALKANOL SOLUTION OF FORMALDEHYDE IN A MOLE RATIO OF FROM 1-8 OF SAID FORMALDEHYDE TO 1 OF SAID OXAZOLINE, AT AN ELEVATED TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO EFFECT PRODUCTION OF SAID VINYL OXAZOLINE, AND THEREBY FORMING WATER OF REACTION, AND SEPARATING SAID WATER BY DISTILLATION, THE IMPROVEMENT COMPRISING THE STEP OF RAPIDLY ADDING SAID FORMALDEHYDE SOLUTION TO SAID OXAZOLINE AT A TEMPERATURE OF 185-190*C. WHILE MAINTAINING THE TEMPERATURE AT NOT LESS THAN 185*C.

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